I'm selling on this whole "set with the stronger arm" thing. I'm of slight build, like a buck-fifty wet, and I have no doubt that many of your "weak arms" are much stronger than both of my arms put together. But I guarantee I run a harder stump puller hookset than most. In fact, anyone that fishes with me for the first time sees me swing, and are usually shocked, LOL.
Its not from brute strength though, its leverage. Perhaps the fact that I've been playing drums for 30 years has some effect, but I don't feel like my left is any weaker, just slightly less coordinated.
Good hook sets are required for certain bait, like weedless jigs or worms, and for both baits, we generally prefer a longer, MH to H rod.
Why?
Most will say to lift the fish from cover, but before that even happens, the longer rod means more tip speed which equals more line pickup and more potential force created to set the hook. The heavier power rod transmits that force back to the hook.
Using braided lines or lines with less stretch works toward this goal as well.
Bottom line, reel with whatever side is more comfortable. If you think there is a weakness in your hookset, examine all the parts. Maybe learning to reel with your other hand will help, but I doubt it.